Acount of the 30 vehicles that passed by a school in a day revealed: 2/5 were minibuses, 1/2 were motorcars, 1/10 were motorcycles. how many of each type passed by?

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.